ucsc custom track

[Ohad]

Hi,

I want to load my bigwig file to view on ucsc.
I tried dropbox but I get the msg:

Error It appears that you are directly uploading binary data in an unrecognized format (https://dl.dropboxusercontent.com/s/.../ucsc2.bw?dl=0). For custom track formatting information, please see custom track documentation.

I think the problem is the lack of the 'url=<external_url>' parameter in my header track line.

Currently my header line only contains:

track type=wiggle_0

Which is enough for a simple wig format when uploading a file directly into UCSC site

The thing is, I cannot know in advance what will be the URL as I only get it after uploading the file (I'm using Dropbox without the Public Folder feature since it is only available for paid accounts).

Does anybody know an alternate host , in which the URL is already known prior to uploading the file ?